Protection of transformations by intermediate randomization in cryptographic operations
US12335365B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2021 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Jun 22, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2207/7223
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Aspects of the present disclosure involve a method and a system to perform a cryptographic operation that involves a number theoretic transformation of a first vector to a second vector by obtaining components of the first vector, performing a plurality of iterations that each include determining a plurality of output values, wherein each of the plurality of output values is a linear combination of two or more input values, the input values into a first iteration being the components of the first vector and the output values of the last iteration being representative of components of the second vector, and wherein one or more of the output values of at least one iteration are randomized by multiplying at least one input value by a random number, and determining, based on the output values of the last of the plurality of iterations, the components of the second vector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.